To be honest, it would be interesting to see some off meta supports like Kennen again. He is not picked much at all nowadays which leaves people, especially non top people, in a very bad spot. If you get it going again expect there to be cries for nerfs like they did for Viktor top.
Although, also do not be too surprised if your team decides to ban it had many people do this just so that I could not try Sett support. It could be an idea to play him with some duos first so you can get a feel for him again before trying with a random ADC..... I say this because I picked sett support one game and my adc kept telling me i was useless and that he was doing all the work blah blah blah.... fact is, even the velkoz support and caitlyn adc of the enemy team were like "yeah we were playing passive because every time we tried to do anything else you were rushing at us." Which is exactly his job if used as a support.... look for openings (which Velkoz has some clear openings) and charge in.
So, beware showing who you plan on picking before ban phase.